DMARC: New Email Authentication Protocol

A consortium of companies including Google, Microsoft, Facebook and Paypal have announced that they were collaborating and coming up with a new protocol known as DMARC -- the Domain-based Message Authentication, Reporting and Conformance. What is DMARC? more»

The State of Mail Database Marketing

My mail server has a lot of spamtraps. They come from various sources, but one of the most prolific is bad addresses in personal domains. Several of my users have their own domains, such as my own johnlevine.com, in which they use a handful of addresses. Those addresses tend either to be people's first names, for individual mailboxes, or else the names of companies. If I did business with Verizon (which I do not) I might give them an address like verizon@johnlevine.com. All those domains get mail to lots of other addresses, which is 100% spam. more»

IP Address Reputation Primer

There has been a lot of recent discussions and questions about reputation, content and delivery of email. I started to answer some of them, and then realized there weren't any basic reference documents I could refer to when explaining the interaction. So I decided to write some. This post is about IP address reputation with some background on why IPs are so important and why ISPs focus so heavily on the sending IP. more»

Privacy Rules to Change in the EU, But What If …?

In a presentation EU Commissioner Viviane Reding gave a preview of the new Privacy regulation her DG is preparing. As she states, privacy rules need to be brought up to date and harmonized. With all 27 member states having the same rules and tools to enforce, a company only will deal with one privacy commissioner... So, what if we, for the sake of this blog, take this initiative towards spam and cyber crime. What would this do to spam enforcement? more»

Implications of Canada's CASL - Toughest Anti-Spam Law the World Has Ever Seen

While Canada was dragging the chain when it came to introducing anti-spam legislation, it is now making up for lost time. Ottawa's new law -- expected to be operational early this year -- has severe fines for violations and is viewed by some as too tough. Known as CASL, the new law aims to crack down on spammers and mailing list companies but in doing so, tightly regulates the way businesses can market to prospective customers via email and online. more»

IBM Predicts the Future for 2016 and It Includes No Spam

IBM published a video where it predicts what the world will look like in 2016 (see bottom of this post for the link). It includes the following five predictions. I want to start with the last one -- that junk mail (i.e., spam) will disappear. You'll need to watch the video to get the nuances of the prediction, but IBM says that in five years, Junk Mail will become a thing of the past. more»

Antispam Law Draws Backlash

I was reading in the Canadian Lawyer Mag that businesses in Canada are now coming to grips with the Canadian Antispam law that was passed last year. Canada's antispam law is much tougher than most jurisdictions. Aside from the penalties of the law, which are steep, what differentiates it the most from the US law is that Canada's law is an opt-in law; marketers who send commercial email must be able to demonstrate that they received consent in writing in order to market to people. As expected, people who are most affected by the law - marketers - are upset about the lack of wriggle room and how it could affect their business. more»

Abuse Reporting: Names vs Numbers

For email usage, abuse reporting requires cooperation between senders and receivers. That's why RFC 5965 specified a standard format for it. However, Wikipedia lists only 18 feedback providers today. It is often said that the number of legitimate mailbox providers in the world is rather small, possibly some hundreds of thousands, but certainly more than that. more»

Filtering Spam at the Transport Level

An interesting new paper from the Naval Postgraduate School describes what appears to be an interesting new twist on spam filtering, looking at the characteristics of the TCP session through which the mail is delivered. They observe that bots typically live on cable or DSL connections with slow congested upstreams. ... This paper tries to see whether it would be practical to use that info to manage spam in real time. more»

Greylisting Still Works - Part II

In my last post I blogged about greylisting, a well-known anti-spam technique for rejecting spam sent by botnets. When a mail server receives a an attempt to deliver mail from an IP address that's never sent mail before, it rejects the message with a "soft fail" error which tells the sender to try again later. Real mail senders always retry, badly written spamware often doesn't. I found that even though everyone knows about greylisting, about 2/3 of IPs don't successfully retry. more»